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Method for improving performance accuracy in differential absorption LIDAR for detection and quantification of oil and gas leaks
Method for improving performance accuracy in differential absorption LIDAR for detection and quantification of oil and gas leaks
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机译:差分吸收激光雷达中用于油气泄漏检测和定量的性能精度提高方法
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摘要
An improved method for determining whether a measurement point, measured using a differential absorption LIDAR (DIAL) system, represents a plume point or a non-plume point. Concentration path lengths (CPL's) for a plurality of measurement points are determined. An average non-plume CPL, O OSTYLE="SINGLE"CPL, is provided. For each measurement point, a standard deviation, CPLSUBsd/SUB, is calculated based on first order error propagation and it is determined that the measurement point represents a non-plume point when the Hooshmand decision rule (HDR) is met. The HDR is given by, maths id="MATH-US-00001" num="00001" MATH OVERFLOW="SCROLL" MROW MROW MSUP MROW MO(/MO MFRAC MROW MIcpl/MI MO-/MO MOVER MICPL/MI MI_/MI /MOVER /MROW MSUB MICPL/MI MIsd/MI /MSUB /MFRAC MO)/MO /MROW MN2/MN /MSUP MO/MO MSUP MROW MO(/MO MIT/MI MO)/MO /MROW MN2/MN /MSUP /MROW MO,/MO /MROW /MATH /MATHS where cpl is the corresponding CPL of the measurement point being tested and T is a threshold standard deviation level.
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